US2665796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal feed tube
Assignee: JAMES E AXEMAN
•
Filing: 1949-11-19
•
Granted: 1954-01-12
•
Expires: 1969-11-19
Abstract
No abstract record available.
Inventors
- 👤 William S Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:09
CPC Classifications
F; F23; F23K; F23K3/00; F23K3/10; F23K3/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US311052A
Cited
US1330219A
Cited
US1661422A
Cited
US1590655A
Cited
US1748039A
Cited
US2052984A
Cited
US2428995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |